JPH08147348A - Check system for cad parts library - Google Patents

Abstract

PURPOSE: To save the generation of the unnecessary cost for design and manufacture by improving the quality of a CAD parts library and finding an error at the initial step of designing even at the time of making an error to reduce man-hour for retracing. CONSTITUTION: A logical parts library 101, a physical parts library 105 prepared by different CAD systems and a control indication part 104 indicating processing object parts and control information are inputted. Respectively through intermediate files A103 and B107, a boundary preparing processing part 108 prepares only parts information respectively necessary as comparing object as a boundary tables A109 and B110 to compare contents with respect to all the pins of the parts to confirm the propriety of the CAD parts library before designing. Thereby, the discrepancy of the CAD parts library is prevented from being delivered to a following process.

Description

Detailed Description of the Invention

[0001]

The present invention relates to CAD (Compute)
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a check system of a r Add Design part library, and particularly to a check system of a CAD part library for checking a difference between a logical part library and a physical part library created by different CAD systems.

[0002]

2. Description of the Related Art As such a CAD component library, a logical component library storing logical component information indicating a circuit component name, a pin type, etc., necessary for drawing an electric circuit, and the logical component information. In addition to this, there is a physical component library that stores physical component information such as relative position coordinates of pins of the component, which is necessary when designing a printed circuit board of an electric circuit.

These two parts libraries are generally different C
Often created by an AD program system,
Therefore, it is necessary to check whether both component libraries have been created correctly without conflict. As a method of checking the CAD part library, a visual check by a person as shown in FIG. 7 is performed.

As described above, the logic component library 101 stores the logic component information necessary for drawing an electric circuit. Specifically, reference numeral 73 in FIG.
, The part name (LS ○○○) and the pin number (1
~ 8), pin type (D0, D1, E0, E1, S0, S
1, GND, Vcc) and the like are stored in advance for all circuit components.

As described above, the physical component library 105 stores physical component information necessary for designing a printed circuit board of an electric circuit. Specifically, as shown by reference numeral 76 in FIG. , Part name (LS ○○○),
Physical information such as pin numbers (1 to 8), relative coordinates of pins, and pitches is stored in advance for all circuit components.

These logical component library 101 and physical component library 105 are input respectively, and the logical component plot 72 and the physical component plot 75 are used to output them as a logical component registration management sheet 73 and a physical component registration management sheet 76. Both registration management sheets 73
And 76 are manually brought into contact with each other, and a visual check is performed for each pin of each component to inspect whether or not there is a manufacturing error.

[0007]

As described above, the conventional CA
Since the method of checking the D-part library depends on human visual inspection, it cannot be said that there is absolutely no omission in the check. Therefore, a mistake in the CAD-part library may be found in the post-design process, or in the worst case. Has a problem that it is eventually detected as a product defect at the product inspection stage.

An object of the present invention is to provide a CAD part library check system which surely and automatically checks the identity between a logical part library and a physical part library generated by different CAD program systems. Is to provide.

[0009]

According to the present invention, a logic component library in which logic component information indicating circuit component names, pin types, etc., necessary for drawing an electric circuit is stored corresponding to the circuit components, A check system in a CAD part library, which includes, in addition to the logical part information, a physical part library storing physical part information such as pin coordinates of the part necessary when designing a printed circuit board of the electric circuit, Designating means for designating a component to be extracted from the logical component library and the physical component library and coordinate calculation information for calculating the coordinates of each pin of the designated component, and the component designated by the designating means. Extraction means for respectively extracting information on the logical component library and the physical component library, and the logical means by the extracting means. Pin coordinate calculation means for calculating each pin coordinate of the component extracted from the product library using the coordinate calculation information, and the calculated pin coordinate and the pin coordinate of the extracted physical component information designated by the designating means. A CAD part library checking system is obtained which includes a comparing means for respectively comparing and checking.

[0010]

The physical part library stores relative pin coordinates of each part in advance for designing a printed circuit board.
This relative pin coordinate is not stored in the logical component library. Therefore, the specified logical component information is extracted from this logical component library, and in addition to this logical component information, the pin coordinates that are physical component information are further calculated by giving control information from the outside, and the pin of the calculation result is calculated. The coordinate and the pin coordinate of the physical component information designated from the physical component library are compared and checked.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram functionally representing the processing operation of the system of the embodiment of the present invention, and FIG. 2 is a flow chart showing the details of the processing contents.

First, the logical component library 101 created by the CAD system "A" and the instruction information from the control instruction unit 104 are input, and the intermediate file conversion processing unit A10 is entered.
Intermediate file A extracted from the logical information of the target part by 2
103 is created (steps 201 to 203).

FIG. 3 shows the contents of the instruction information from the control instruction unit 104 at that time. In FIG. 3, / PARTS on the first line indicates the extraction processing target component name, but in this example, LSOO is indicated. The second line / UNITmm indicates that the unit system of the component is millimeter. 3rd line / PITCH X = 2.5
4 Y = 7.62 indicates the pin spacing in the X and Y directions. The fourth line / PIN is the logical component library 101
Since there are no relative x-coordinates and y-coordinates of each pin, information for calculating and generating the relative x-coordinates and y-coordinates of each pin is indicated.

In this example of instruction, pins 1 to 4 are x
The coordinates start from 0, and then X specified by / PITCH
The value of increases by 2,54, indicating that the y coordinate is always 0. That is, (0,0), (2.54,0),
, (7.62, 0) are created by the subsequent boundary table creation processing unit 108 in correspondence with each pin.

For Nos. 5 to 8, the x coordinate starts from 3X, that is, 7.62, and is thereafter subtracted by 2.54,
It shows that the y coordinate is always Y or 7.62.
As a result, corresponding to each pin (7.62, 7.62),
(5.08, 7.62), ..., (0, 7.62) are similarly created by the subsequent boundary table creation processing unit 108. / END on the 7th line indicates the end of the control instruction information.

Returning to FIG. 1 again, the physical file library 105 and the control instruction unit 104 are input next, and the intermediate file conversion processing unit B106 creates an intermediate file B107 in which the logical information and physical information of the target component are extracted. (Steps 204 to 205).

Intermediate file A10 created in this way
3, the content of the intermediate file B107 is shown in FIG. Although the intermediate file A 103 and the intermediate file B 107 are the same in format, the intermediate file B 10 is similar in content.
7 includes physical information such as relative x and y coordinates of each pin.

In FIG. 4, PARTS on the first line indicates the specified extracted component name, and PARTS No. on the second line.
Indicates the part number, and PKG indicates the package type of the part. The total number of pins for TOTAL PIN on the 4th row is 5
ORG on the line is the relative origin coordinate of this part
IN NAME indicates each pin type.

Next, the intermediate file A 103, the intermediate file B 107, and the instruction information from the control instruction unit 104 are input, and the boundary table creation processing unit 108
First, the boundary table A109 is created. At this time, based on the / PIN information instructed by the control instructing unit 104, in addition to the logical information of the pin number and logical pin name obtained from the intermediate file A103, the relative x and y coordinates of each pin are determined as described above. It is generated and added to the boundary table A109.

After the boundary table A 109 is created in this way, the boundary table B containing the logical information of the pin number and the logical pin name and the physical information of the x coordinate and the y coordinate of the pin.
110 is created. FIG. 5 shows the state, FIG. 5 (A) shows the model of the boundary table A109, and FIG. 5 (B) shows a concrete example thereof. FIG. 5 (C)
Indicates the boundary table B110 (steps 206 and 207).

Boundary table A thus created
109 and the pin number, logical pin name, x-coordinate, and y-coordinate of all pins of the boundary table B110 are finally compared by the comparison processing unit 111, and if there is any difference as a result, the comparison result information 112 Output a report that clearly shows the differences.

FIG. 6 shows an example of the output report 112. This example shows a report output when there is a mistake in which the logical pin names of the logical component library and the physical component library are swapped for the component name LS00.

The logical component library 10 shown in FIG.
As an example of the CAD system "A" for generating 1, "VI"
STAS ”program, physical parts library 10
As an example of the CAD system "B" for generating 5, "PL"
ANET "programs, but are not limited to these.

[0025]

As described above, according to the present invention, it is possible to automate as much as possible the visual validity check performed for each component of the logical component library and the physical component library created by different CAD systems. Due to
It is possible to improve the quality of the CAD part library and detect defects at an early stage of design, reduce the number of backtracking processes, shorten the development period, etc., and have the effect of significantly improving the design efficiency.

[Brief description of drawings]

FIG. 1 is a schematic function and process flow diagram of an embodiment of the present invention.

FIG. 2 is a process flow diagram showing details of the process of FIG.

FIG. 3 is a diagram showing an example of instruction information of a control instruction unit.

FIG. 4 is a diagram showing the contents of an intermediate file.

FIG. 5A is a diagram showing a model of a boundary table,
(B) is a diagram showing a specific example of the boundary table A,
(C) is a figure which shows the specific example of the boundary table B.

FIG. 6 is a diagram showing a report output example of comparison result information after a comparison check.

FIG. 7 is a diagram showing a conventional method of checking a CAD part library.

[Explanation of symbols]

 101 logical component library 102, 106 intermediate file conversion processing unit 103, 107 intermediate file 104 control instruction unit 105 physical component library 108 boundary table creation processing unit 109, 110 boundary table 111 comparison processing unit 112 comparison result information

Claims (3)

[Claims] 1. A logical component library in which logical component information indicating a circuit component name, a pin type, and the like necessary for drawing an electric circuit is stored corresponding to the circuit component, and the electrical component in addition to the logical component information. A check system in a CAD part library including a physical part library storing physical part information such as pin coordinates of the part required when designing a printed circuit board of a circuit, comprising a logical part library and a physical part library. Designating means for designating a component to be extracted and coordinate calculation information for calculating the coordinates of each pin of the designated component, and information about the component designated by the designating means is provided to the logical component library and the physical component. Extraction means for respectively extracting from the component library, and a unit extracted from the logical component library by the extraction means Pin coordinate calculation means for calculating each pin coordinate of the product using the coordinate calculation information, and the calculated pin coordinate and the pin coordinate of the physical part information specified and extracted by the specifying means are compared and checked. A CAD part library check system, comprising: 2. The extracting means is configured to temporarily hold each of the extracted information extracted from the logical component library and the physical component library as an intermediate file, and the pin coordinate calculating means is configured to store the extracted information. 2. The CAD part library check system according to claim 1, wherein the pin part coordinates are calculated for the part of the intermediate file corresponding to the information extracted from the part library. 3. The CAD component library check system according to claim 1, wherein the logical component library and the physical component library are created by different CAD programs.